Re: Yoga 910 crazy loud fan even when CPU at <35%

I really liked this ultrabook but the very first thing I realized was the fan noise. I did the recommended settings (lowering the CPU to 99%). It does help but still not a quiet computer.

I really do not want to return it but I do not think I do not have any other option. As Joshva80 said, what option do we have. All ultra books have some problems. I was going to go with apple macbook pro, but after seeing their joke priceses and not including touch-screen feature etc. I thought this would be a good option.

Re: Yoga 910 crazy loud fan even when CPU at <35%

I hear you. I went into BB store planning to get the new Surface Book i7/512/16. It added up to near $2900. I tried all kinds of mental gymansitcs, I just could not justify it.

The 910 came to the rescue. Gorgous, sexy, & a piece of artistic engineering at half the price. I have been using it for 2 days and I can still hear the buzzing fan in my ears even after shutting it down.

The unit I have had the left-side fan buzzing non-stop for the entire day. The right side was on & off and did not buzz. I do not know why the fans stay on all day even though CPU usage averaged < 5%.

I have already returned the unit & BB offered me a repalacement which I declined. From what I have read, this seems to be a persistent issue.

I'll be wactching the forums and Lenovo support hoping to see a fix come out. I will be more than happy to re-purchase it if resovled.

Re: Yoga 910 crazy loud fan even when CPU at <35%

‎11-18-201607:41 PM

I hear you guys. I really want to like this thing. Truthfully speaking, there are no alternatives at this point in the PC roster. The MBP sound enticing, but not shelling out more Franklins for a gimmicky touchbar.

Sidenote: The speakers are ridiciously good. The best I've ever heard on a laptop. Bar none.

Like you all, I'm fingers crossed that there is a software-oriented solution for this issue.

Re: Yoga 910 crazy loud fan even when CPU at <35%

‎11-19-201606:54 PM - edited ‎11-19-201607:18 PM

There likely will not be a software solution. This is due to the laptop's design and the CPU it uses. If the CPU is running at full speed, it will generate a lot of heat. When it gets to about ~65 Celcius, the fan will run at high speed in order to keep things cool. It's dangerous to let the CPU get much hotter than 80 Celcius (and it will shut off entirely at ~100 Celcius) since it has the potential to shorten the lifespan of the CPU. There are two basic options here: Throttle the CPU so that it doesn't become hot often, or let the fan do its thing to keep the CPU cool. At most, Lenovo could tweak the temperature at which the fan runs at its highest speed, but I think this is unlikely because keeping the CPU cool during operation is extremely important.

You could try the "99%" trick and that might work (though I have my doubts just tested this, it actually does seem to help a bit), but I would definitely NOT recommend opening the machine and unplugging the fan.

2) The buzzing & high pitch sound of the fan (mostly on left side) is distrubing. I'm unable to enjoy watching a movie or comfortably focus on a TedTalk. It is sad because the speakers on the 910 is the best out of all the laptops I have.

I hope Lenovo support is monitoirng this forum to help facilitate in identifying the issue and fixing it.

Re: Yoga 910 crazy loud fan even when CPU at <35%

In terms of when the fan turns on, your mileage may vary of course, depending on many factors. In my testing, the fan revved up at temps over ~43 Celcius, and went full speed above 60 or so.

After some benchmark testing, I can't really say I recommend the 99% CPU "fix".

Geekbench 4 scores, High Performance mode, on battery, 100% max CPU:

4217 Single-core

8010 Multi-core

99% max CPU:

3527 Single-core

6623 Multi-core

This is a pretty big hit to performance. This will be fine for most use cases, but if you need the extra power, you're going to have to deal with the fan noise. Lenovo may be able to tweak the fan curve a bit with a BIOS update but potentially at the cost of shortening the life of the CPU.